Watch List notes:

Cn. Domitius Ahenobarbus (or Calvinus), Quadrans, Rome, 128 BC; AE (g 4,52; mm 19; h 4); Head of Hercules r., wearing lion's skin; behind, °°°, Rv. Prow r.; above, CN DOME; before, °°°; below, ROMA. Crawford 261/4; Domitia 5; Sydenham 515c.
Beautiful green patina, minor break on edge, extremely fine.